In vivo binding of hot pepper bZIP transcription factor CabZIP1 to the G-box region of pathogenesis-related protein 1 promoter

Boo Ja Lee, Chang Jin Park, Sung Kyu Kim, Ki Jeong Kim, Kyung Hee Paek

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)

    Abstract

    We find that salicylic acid and ethephon treatment in hot pepper increases the expression of a putative basic/leucine zipper (bZIP) transcription factor gene, CabZIP1. CabZIP1 mRNA is expressed ubiquitously in various organs. The green fluorescent protein-fused transcription factor, CabZIP1::GFP, can be specifically localized to the nucleus, an action that is consistent with the presence of a nuclear localization signal in its protein sequence. Transient overexpression of the CabZIP1 transcription factor results in an increase in PR-1 transcripts level in Nicotiana benthamiana leaves. Using chromatin immunoprecipitation, we demonstrate that CabZIP1 binds to the G-box elements in native promoter of the hot pepper pathogenesis-related protein 1 (CaPR-1) gene in vivo. Taken together, our results suggest that CabZIP1 plays a role as a transcriptional regulator of the CaPR-1 gene.

    Original languageEnglish
    Pages (from-to)55-62
    Number of pages8
    JournalBiochemical and biophysical research communications
    Volume344
    Issue number1
    DOIs
    Publication statusPublished - 2006 May 26

    Bibliographical note

    Funding Information:
    This study was supported by a grant (R11-2003-008-02001-0) from the Korea Science and Engineering Foundation to the Plant Signaling Network Research Center.

    Keywords

    • CaPR-1 promoter
    • CabZIP1
    • Chromatin immunoprecipitation (ChIP)
    • Hot pepper (Capsicum annuum L.)
    • Nuclear localization

    ASJC Scopus subject areas

    • Biophysics
    • Biochemistry
    • Molecular Biology
    • Cell Biology

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